November 3, 2021 · Applied Cybernetics Group
CVE-2021-33742 — Microsoft Windows
Microsoft Windows MSHTML Platform Remote Code Execution Vulnerability
- Added to KEV
2021-11-03- Federal due date
2021-11-17- Vendor
- Microsoft
- Product
- Windows
- EPSS
- 98.8th percentile (score 0.721, as of
2026-06-08) - NVD CVSS v3.1
- —
- Ransomware use
- Unknown
- Upstream
- https://nvd.nist.gov/vuln/detail/CVE-2021-33742
CISA short description
Microsoft Windows MSHTML Platform contains an unspecified vulnerability that allows for remote code execution.
Required action
Apply updates per vendor instructions.